:root {
  color-scheme: light dark;
  --tg-bg: var(--tg-theme-bg-color, #f4f1eb);
  --tg-surface: var(--tg-theme-secondary-bg-color, #fffaf3);
  --tg-text: var(--tg-theme-text-color, #17130f);
  --tg-hint: var(--tg-theme-hint-color, #7f7267);
  --tg-link: var(--tg-theme-link-color, #1d6cff);
  --tg-button: var(--tg-theme-button-color, #17130f);
  --tg-button-text: var(--tg-theme-button-text-color, #fff8ef);
  --tg-destructive: #c0483d;
  --line: color-mix(in srgb, var(--tg-text) 10%, transparent);
  --shadow: 0 18px 40px rgba(23, 19, 15, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 20px;
  --space-5: 24px;
  --space-6: 32px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(223, 190, 120, 0.22), transparent 36%),
    radial-gradient(circle at top right, rgba(114, 167, 220, 0.18), transparent 28%),
    var(--tg-bg);
  color: var(--tg-text);
  font-family: "Inter", "Segoe UI", sans-serif;
}

body {
  padding: env(safe-area-inset-top) var(--space-3) calc(88px + env(safe-area-inset-bottom));
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(100%, 720px);
  margin: 0 auto;
}

.app-header,
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.app-header {
  margin-bottom: var(--space-4);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--tg-hint);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1;
}

h2 {
  font-size: clamp(22px, 5vw, 28px);
  line-height: 1.05;
}

h3 {
  font-size: 18px;
  line-height: 1.15;
}

.app-main {
  display: grid;
  gap: var(--space-4);
}

.screen {
  display: none;
  gap: var(--space-4);
}

.screen.active {
  display: grid;
}

.card,
.feature-card,
.admin-panel,
.result-card,
.status-banner {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--tg-surface) 90%, white);
  box-shadow: var(--shadow);
}

.card,
.admin-panel,
.result-card {
  padding: var(--space-4);
}

.hero-card {
  padding: var(--space-5);
  background:
    linear-gradient(145deg, rgba(255, 247, 229, 0.95), rgba(255, 251, 244, 0.82)),
    var(--tg-surface);
}

.bootstrap-card {
  display: none;
}

.bootstrap-card.visible {
  display: block;
}

.status-banner {
  display: none;
  padding: var(--space-3) var(--space-4);
}

.status-banner.visible {
  display: block;
}

.status-banner.error {
  border-color: rgba(192, 72, 61, 0.28);
  color: #7c241d;
}

.feature-grid,
.results-stack,
.admin-stack {
  display: grid;
  gap: var(--space-3);
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card {
  display: grid;
  gap: 6px;
  text-align: left;
  padding: var(--space-4);
}

.feature-card:hover,
.feature-card:focus-visible,
.tab-button:hover,
.tab-button:focus-visible,
.segment:hover,
.segment:focus-visible,
.ghost-button:hover,
.ghost-button:focus-visible {
  transform: translateY(-1px);
}

.feature-kicker,
.feature-copy {
  color: var(--tg-hint);
}

.field {
  display: grid;
  gap: 8px;
  margin-top: var(--space-3);
}

.field.hidden,
.hidden {
  display: none;
}

label {
  font-size: 14px;
  color: var(--tg-hint);
}

input,
select {
  width: 100%;
  min-height: 48px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  color: var(--tg-text);
  padding: 0 var(--space-3);
}

input:focus-visible,
select:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--tg-link) 40%, white);
  outline-offset: 1px;
}

.primary-button,
.ghost-button,
.tab-button,
.segment {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  transition: transform 180ms ease, opacity 180ms ease, background-color 180ms ease;
}

.primary-button {
  width: 100%;
  margin-top: var(--space-4);
  background: var(--tg-button);
  color: var(--tg-button-text);
  padding: 0 var(--space-4);
}

.ghost-button {
  padding: 0 var(--space-3);
  background: rgba(255, 255, 255, 0.66);
  color: var(--tg-text);
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: var(--space-3);
}

.segment {
  background: rgba(255, 255, 255, 0.65);
  color: var(--tg-text);
}

.segment.active,
.tab-button.active {
  background: var(--tg-button);
  color: var(--tg-button-text);
}

.hint {
  color: var(--tg-hint);
  font-size: 13px;
}

.result-card {
  display: grid;
  gap: var(--space-2);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.metric {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid var(--line);
}

.metric .label {
  display: block;
  color: var(--tg-hint);
  font-size: 13px;
  margin-bottom: 4px;
}

.list {
  display: grid;
  gap: 10px;
}

.list-row {
  display: grid;
  gap: 4px;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--line);
}

.row-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.muted {
  color: var(--tg-hint);
}

.help-list {
  display: grid;
  gap: 10px;
  padding-left: 20px;
}

.tab-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  padding:
    var(--space-2)
    var(--space-3)
    calc(var(--space-2) + env(safe-area-inset-bottom));
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--tg-bg) 72%, transparent);
}

.tab-button {
  min-height: 52px;
  padding: 0 var(--space-2);
  background: rgba(255, 255, 255, 0.72);
  color: var(--tg-text);
}

@media (max-width: 560px) {
  .feature-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}